<%--
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  User: lenovo
  Date: 2024/11/22
  Time: 13:00
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<%@ page contentType="text/html;charset=UTF-8" language="java"
         %>
<html>
<head>
    <title>圆半径提交</title>
</head>
<body>
  <form action="CircleServlet" method="get">
    圆的半径：<input type="text" name="radius"/><br/>
    <input type="submit" value="计算面积">
  </form>
</body>
</html>
